Appaeatus foe condensing oe deying liquids



(No Model.) 2 Sheets-Sheet 1.

APPARATUS FOR GONDENSING OR DRYING LIQUIDS.

No. 292,950. Patented Feb. 5, 1884 L v A MWMJLAAU; M0 MAG-CL M W n. PETERS. Phomulnc n lwr. Wanhinlon. In; 7

N. B. RICE. A A J (l Io Model.) 2 SheetsSheet 2. N. B. RICE.-

APPARATUS FOR GONDENSING 0R DRYING LIQUIDS. No. 292 950. Patented Feb. 5, 1884.

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I WbA/ u I WM N. PEIERS. Plwlo-Limngnpher. Washington D, c.

' UNIT D ST T 5 P N I. FFICE' m rnnmnn 1:. RICE, or crrrcaco, ILLINOIS, .assionon TO CHRISTIAN WA L, or shine PLACE. I

APPARATUS FOR CONDENSING OR DRYING LIQUIDS.

SPECIFICATION forming part of Lettersjatent No. 292,950, dated February 5, 1884.

Application filed July 26, 1883. (No model.) 7

' To all whom it may concern:

Be it known that I, NATHANIEL B. RICE, residing at Chicago, in the county of Cook and State of Illinois, and a citizen of the United States, have invented certain new and useful Improvements in Apparatus for Condensing or Drying Liquids, &c., of which the following is a full description,refereneebeing had to the accompanying drawings, in which- Figure 1 is a longitudinal vertical section on line y y of Fig. 2; Fig. 2, a cross-section 011 line x w of Fig. 1, and Fig. 3 a transversevertical section on line z z of Fig. 1.

The object of this invention is to improve the construction and operation of apparatus to be used for evaporating liquids or liquid solutions, either with or without a vacuum; and its nature consists in bringing the channel to be traversed by the liquids or liquid solution into a close compact form; in heating the apparatus .by placing the heating-pipes over or out of contact with the liquids or liquid solutionto be reduced or dried, and in the several parts and combinations of parts hereinafter described and claimed as new. i I I In the drawings, A indicates the main or central portion of the exterior casing; B B, the end sections; O, the section or passage for exhausting air; D, the exhaust-passage; E, inlet for the liquid to be treated; F, outlet for the treated liquid; G, an interior dividing or par- "tition plate; a, flanges for bolting or riveting will depend somewhat upon the use for which they are designed. The form shown being designed for concentrating liquids, I make it about eight feet high and long, with a width of about three feet. These dimensions will give a sufficient length of travel for the liquid. In

this construction, the exterior casings form the outer boundaries of the channel-ways, and the partition Gforms the inner boundary, and as this is the main purpose of this partition or division plate, it is not important that it be contin- I nous or entire, so long as sufficient remains to furnish complete or perfect channels in connec 1 tion with the bottom G and the exterior casing; 1 but as it forms theinterior support for the channels, I preferto make itcontinuous, as shown.

The steam-pipes (Z c areattached to or supported against the under sideof the-plates or bottoms of the channels I; 0, so that they do not come in contact with the liquid flowing through and down the channels, but act upon them by V heating the bottom of the channel, which is covered by the flowing material, and by a direct Y radiation of heat onto or in the liquid moving below them, and by this arrangement of the pipes in relation to the passing liquid it is impossible to'scoreh or burn the liquid or otherwise injure it by contact with the pipes, as the two do not in any case come in contact. The return-bends (Z of the pipes are not connected with the end shelves,b. The steam-pipes are attached irrespective of these shelves, so that the end sections, B B, can be placed in position at ter the pipes are properly attached to the sectionA. The shelves or channel-bottoms!) are arranged in their respective end sections, so as to meet the lower end of a shelf, a, on one side, and the upper end of a shelf, 0, on the other side, and connect them together, so as to form continuous channels from the top to the bottom.

to and connected with the shelves or channelbottoms 0. They may, however, be so formed as to connect with the bottoms 0, so as to give a uniform and continuousdescent, and as such uniform descent is immaterial, I prefer to make them horizontal, and by making them horizontal I prevent thepassing liquids from getting an accelerated movement in their passage downward.

I have shown only one steam'pipe under each shelf or channel-bottom; but it will be understood that a greater number may be used in the place of the one shown. Vhen more The shelves or channel-bottoms Z) are; horizontal, as shown, and I prefer to makethem this way, as they are more easily-fitted 1 than one is used, they are connected at their 5 For producing a circulation of steam through the pipes when more than one is used, and providing for theescape of the water of condensation, a cross-pipe maybe connected'with the exhaust pipe and applied at the bottom. Steam may be made to traverse the pipes in either direction, as the inlet and outlet pipes may be used in a reverse manner. I

In putting the parts together, suitable packing material is to be placed between or under the flanges a.

.For the purpose of. exhausting the air from this device, I apply a passage, G, to one side or end of the casing, and, in order to give this passage a suitable capacity, I prefer to place it on the outside, as shown; but it may be located inside. Each liquid-passage near the steam-pipe, or sufficiently above the channelbottoms to prevent an overflow of the liquid, is provided with a passage, h, through which cal passage 0. This arrangement is for the purpose of working the apparatus under vacuum, and the exhaust-fan or other exhaust device is applied to the pipe or opening D.

In operation, the liquid to be concentrated or reduced in quantity passes in through the pipe or opening E, from which it passes to a shelf or "channel-bottom, thence to the opposite side, and so on until the bottom is reached, when it is discharged through the pipe F, which pipe is provided with a trap or is made long enough to furnish a sufficient check to the air to give the exhaust its proper operation, and the inlet E is also suitably made for this purpose. This will be found a very efficient device for a vacuum-pan or for operation under an exhaust. found a very efficient device for operating in the reverse manner or under a blast, and the opening at or near the bottom,,and to 'close by a suitable register or otherwise the openings h, and if the apparatus is originally con- .structed for the purpose of applying the blast only the openings h may be omitted in construction. In this latter form the blast will be applied at or near the bottom, and will pass out at the opening D, and carry with it the air is permitted to pass into the verti-- It will also be only change required is to provide an air-- the vapors exhaled from the liquid over which it passes. The air in this method of using the device may be wholly or partly heated outside; but it will be found, even with this arrangement, advantageous to use the interior pipes for heating the channels and the liquid, as with an exhaust or vacuum opera- I do not claim, broadly, the use of a continuous descending channel, as that is shown and described in Patent No. 250,694, and one of the objects of this invention is to improve the apparatus of said patent, and by this arrangement the desired number of these machines may be placed side by side, so as to occupy but little room space, while a greatly increased and enlarged evaporating capacity is obtained in acomparatively small space.

The channels may be copper-lined, or the ap-' paratusmay be made of sheet-copper or plateiron, and be partly copper-lined when made or when cast, to facilitate cleaning and to avoid cementing or makingihe joint otherwise nonleaking.

"What I claim as new, and desire to secureby Letters Patent, is

1. The casing A B B, in combination with the channel bottoms. Z) c and the divisionplate G, whereby the continuous channel is brought into a compact space and the channel is formed without risers or flanges attached-to the channel-bottoms, substantially as specified.

I 2. In an evaporating apparatus, the steampipes d 0, located beneath the bottom of a channel and out of contact with the contents of the channel beneath, whereby the channels and contents are heated without the contact of the steam pipes or passages with the liquid, substantially as described.

3. The combination of the vertical passage 0 with the casing A, having the side openings, h,and the exhaust-passage D, substantially as specified.

4. The central section, A, having the steampipes attached to it, in combination with the removable end sections,whereby the device may be opened without detaching the pipes, 1

substantially as described.

' NATHANIEL B. RICE.

\Vitn esses:

0. WV. BOND, A. H. ADAMS. 

